CN86209336U

CN86209336U - Power-saving slowly closed non-retarn butterfly valve

Info

Publication number: CN86209336U
Application number: CN 86209336
Authority: CN
Inventors: 杨树蔚; 张春茂
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-11-19
Filing date: 1986-11-19
Publication date: 1987-11-07

Abstract

The utility model relates to a power-saving slowly closed non-return butterfly valve, comprising a hydraulic actuating cylinder and a valve body. When medium flows in or the medium flows back, with the eccentric force of a butterfly plate and the weight of a heavy hammer, the butterfly plate is automatically opened and closed. The utility model which is uneasy to damage has the advantages of no consumption of the electric energy, simple structure and high reliability.

Description

Power-saving slowly closed non-retarn butterfly valve

The utility model is the energy-conservation Slow Close non-return dish valve that a kind of control flow rate is used.

Domestic normally used H44T-10 revolves and opens safety check, does not have damping device, closes too soon, produces direct hammer pressure, and the dish plate is in company with the flow size variation, the swing that does not stop, and the dish plate produces wearing and tearing with the shaft connection place, easily destruction.The weight that external West Germany VAG company the produces safety check that surges, this valve needs electric energy when opening, and the work of motor rotating drive hydraulic actuator drives the weight rotation, thereby the dish plate is opened.This valve arrangement and control system complexity, consumed power, cost height.

The purpose of this utility model provides a kind of not consumed power, and is simple in structure, and not fragile, cost is low, under different pressure, flow condition, and the energy-conservation Slow Close non-return dish valve of energy smooth working.

The utility model---energy-conservation Slow Close non-return dish valve mainly is made up of hydraulic actuator, valve body, valve shaft, connecting plate, weight and dish plate.This valve is in pipeline, when medium flow backwards, because valve shaft is installed in the both sides of valve body center line top respectively, the axis of valve shaft and the center line of valve body kept a segment distance, be fixed on the valve shaft the dish plate by means of the outlet medium dynamic pressure, the weight of weight and the eccentric force of own wt are closed automatically.One end of weight is fixed on the valve shaft, and the piston rod by connecting plate and hydraulic actuator links to each other, and the other end of weight is equipped with counterweight, and the angle of swing of weight is by the adjustment hole adjustment on the connecting plate.The speed that the dish plate is closed is by regulating orifice plug of pass slowly and the control of quick closing valve orifice plug on the hydraulic actuator.Hurry up, close slowly throttling has by big beyond the Great Wall by little triangular pyramidal throttling groove, hurry up, slow orifice plug rotates, regulate the gap control oil mass of triangular pyramidal throttling groove and oil circuit, regulate the speed of dish plate, generally be adjusted to 60～70 ° of dish plate elder generation quick closing valves, close slowly on the position of remaining part with 3～20 seconds time then and be advisable.The omnidistance half-twist of dish plate, the power of closing of dish plate is absorbed by the buffering control piece.On the buffering control piece rubber cushion is housed.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is an overall erection drawing of the present utility model.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the structural drawing of hydraulic actuator.

Fig. 4 is the sectional view of hydraulic actuator.

Fig. 5 is the cross-section profile at triangular pyramidal throttling groove place on the orifice plug.

See figures.1.and.2, valve of the present utility model is made up of hydraulic actuator 5, framework 11, valve body 6.Hydraulic actuator 5 is made up of piston 12, cylindrical shell 13, piston rod 14.Be equipped with in hydraulic actuator 5 one sides and close throttle orifice 15 slowly, cylindricality is housed in the hole closes orifice plug 1 slowly, also have quick closing valve throttle orifice 16 below, the fast orifice plug 2 of cylindricality is housed in the hole,

throttle orifice

15,16 communicates with triangular pyramidal throttling groove 17, oil circuit 20.By bolt 18 hydraulic actuator 5 is fixed on the framework 11, by

bolt

21 and 19 framework 11 and hydraulic actuator 5 is connected on the valve body 6, respectively adorn a valve shaft 9,10 above valve body 6 center lines, dish plate 3 is fixed on the valve shaft 9,10.Connecting plate 7 links to each other with piston rod 14, connecting plate 7 and weight 8 are fixed on the valve shaft 10, in medium flows into valve body 6, be fixed on dish plate 3 on the valve shaft 9,10 by means of eccentric force, overcome the frictional force of hydraulic actuator 5 and the weight of weight 8, make the oil on hydraulic actuator piston top, flow into the piston bottom from oil circuit 20 by closing

throttle orifice

15,16 soon, slowly, piston 12 is driven on the piston rod 14 move, by connecting plate 7 and weight 8, dish plate 3 rotates up to be opened.When termination of pumping or medium refluence, since dish plate 3 lay particular stress on weight with weight 8, dish plate 3 is rotated down, the oil of hydraulic actuator piston 12 bottoms is discharged to piston top by closing

throttle orifice

16,15 and oil circuit 20 soon, slowly, piston 12 is moved down, drive dish plate 3 to ShiShimonoseki power by piston rod 14, connecting plate 7, absorb by the rubber cushion on the buffering control piece 4.The speed speed that dish plate 3 is opened is by regulating quick closing valve orifice plug 2 and closing triangular pyramidal throttling groove 17 on the orifice plug 1 slowly and the gap between the oil circuit 20 is controlled.

The utility model has adopted hydraulic actuator, has played the effect of damping, has prevented that the dish plate is subjected to the impact reciprocally swinging of medium, has reduced the friction between dish plate and the valve shaft, has increased the life-span of energy-conservation Slow Close Valve. The utility model also utilizes the dish plate to be contained on the valve shaft of valve body center line top and produces eccentric force, automatically starts, and does not consume electric energy. Make it simple in structure, economical and practical.

Claims

1, a kind of energy-conservation Slow Close non-return dish valve, it is made up of hydraulic actuator 5, valve body 6, valve shaft 9,10, dish plate 3, connecting plate 7, weight 8, it is characterized in that:

1. be equipped with at a side-lower of hydraulic actuator 5 and close orifice plug 1 and quick closing valve orifice plug 2 slowly, slow quick closing valve orifice plug the 1, the 2nd, cylindrical plag has on the cylindrical plag by big by little triangular pyramidal throttling groove 17;

2. valve shaft 9 and valve shaft 10 are housed above valve body 6 center lines, and the center line of valve shaft 9,10 center lines and valve body 6 maintains a certain distance.

2,, it is characterized in that having on the connecting plate 7 adjustment hole that connects weight 8 and regulate the weight angle according to the described energy-conservation Slow Close non-return dish valve of claim 1.

3,, it is characterized in that being equipped with buffering control piece 4 in the bottom of valve body 6 according to the described energy-conservation Slow Close non-return dish valve of claim 1.